Deep-well pump



E. E. JOHNSON.

DEEP WELL PUMP.

APPLICATION FILED JUNE 13, 1919.

1,438,493, I Patented Dec. 12, 1922.

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'2v friliflfan Edward E fahrson.

his Jiffa'rrreys.

Patented Dec. 12, .WZZ.

tm wassn me a tlttt st r-si l EDWARD E. JOHNSON, 0F STdPAUL,IVZINNESOTA.

DEEP-WELL 'PUIMPQ Application filed June 13,

To all whom it may concern:

Be it known that I, EDWARD E. JoHNsoN, a citizen of the United States,residing at St. Paul, in the county of Ramsey and State of Minnesota,have invented certain new and useful Improvements in Deep-VJ ell Pumps,of which the following is a specification.

My invention relates to deep well pumps and an object is to provide apump of this character having a pump head containing mechanism foroperating pump plungers, the operating mechanism being so constructedthat a single unit may be assembled in place on the pump head when it isdesired to employ a single plunger and two or more operating units maybe assembled in cooperative relationship with each other on the pumphead when it is desired to employ two or more plungers for operation inthe pump barrel. A further object is to so construct the operatingmechanism that a plurality of units may be readily assembled for (:0-action in proper timed relation for operating the desired number ofplungers with their relative movements properly timed.

The full objects and advantages of my invention will appear inconnection with the detailed description thereof and the novel featuresembodied in my inventive idea will be particularly pointed out in theclaims.

Referring to the accompanying drawings, which illustrate the applicationof my invention in one form,-

Fig. 1 is aview in a vertical sectional elevation. Fig. 2 is a partsectional and part elevational view taken at right angles to theposition shown in Fig. 1. Fig. 3 is a view on an enlarged scale insection on the line 3-8 of Fig. 2. In the particular embodiment shown inthe drawings, the construction is that of a triplex or three-stroke pumpin which three plungers are used. The character 10 designates a solidreciprocating rod to the lower end of which the lower pump plunger issecured. A hollow reciprocating rod 12 surrounds and is adapted to sliderelatively to the solid rod 10, and an intermediate pump plunger issecured to'the lower end of the hollow rod 12. A hollow rod 14-surrounds and is adap ed to slide relatively to the hollow rod 12 and anupper pump plunger is secured to the lower end of the hollow rod 1%. Thesolid rod 10 at its upper end is journaled 1919. Seria1 No. 303,903.

upon a crank-pin 16. The hollow rod 12 at its upper end is secured to across-head 18 to which the lower ends of rods 20 and 22 are secured.These latter rods are arranged in oifset relation as shown in Fig. 8 andtheir upper-ends are secured to a bearing member 24: whch is j ournaledon a crank-pin 26. The'hollow rod 14 at its upper end is secured to across-head 28 to which the lower ends of rods 30 and 32 are secured.These latter rods are arranged in offset relation in reversed positionrelatively to the rods 20 and 22, as shown in Fig. 3, and the upper endsof the rods 30 and 32 are secured to a bearing member 34 which isjournaled on a crank-pin 86. The pump head is provided with bearings fora transverse driving shaft 38 to which are secured two pinions 410meshing with external ring gears 42 rotatably mounted upon a circularseries of roller bearings 44 which are located between an offset innerwall-of the gears 40 and the outer wall of internal ring gears d6 whichare rigidly secured to the gear casing. Spur gears 48 mesh with theinternal gears l6, the diameterof these spur gears being one-half thediameter of'the internal gears. The spur gears 48 are rotatably mountedon studs 50 attached to the external gears 42 between their centers andperipheries. The two spur gears 48 are connected by the crankpin 26previously referred to, which is so positioned that the center thereofextends between the pitch lines of the spur gears 48. In operation therotation of the external gears 42 carries the spur gears 48 in anannular path, thereby rolling them around within the internal gears d6.Since the latter are twice the diameter of the spur gears 48, thecrank-pin 26 is caused to move up and down in a straight line andreciprocate the attached'pump rod. In case it is desired to use only onepump plunger a single operating unit, such as described, is employed andthe solid pump rod 10 is attached to the bearing member which isjournaled on the crank-pin. If it is desired to use two pump plungersanother operating unit, designated by the character A, similar to thatjust described and designated generally by the character B is used, thetwo units being assembled so that the external gears of the two unitsmesh with each other for rotation in opposite directions. In such casethe solid pump rod 10 is attached to the cranktions.

pin 16 of the unit A and the hollow pump rod 12 is attached to thecrank-pin of the superimposed unit 13, and the external gears of the twounits are meshed so that the two cranl ins reciprocate oppositely, ortoward and away from each other alternately. If it is desired to usethree pump plungers a third unit, designated by the character'C issuperimposed upon unit B with the external gears of the two unitsmeshing with each other sothat the gears are driven in opposite direc-In this case the hollow pump rod 1% is attached to the crank-pin 36 ofthe unit C and the external gears of the three units are meshed insuchposition that the crank-pins of the three units reciprocate with aproperly timed relationship.

I claim:

1. In combination with a base and two or more pump rods mounted forreciprocation therethrough, mutually detachable pump operatin unitscorresponding in number to the number of pump rods, mounted upon saidbase and in tandem series upon one another,,each having independentconnection with one only of said pump rods, and meansfor driving one ofsaid units directly from a source of powerand all of the other unitsfrom the driven unit.

2. In combination with a base and two or more pump rods mounted forreciprocation therethrough, mutually detachable pump operating unitscorresponding in number to the number of pump rods, mounted upon saidbase and in tandem series upon one another, each having independentconnection with one only of said pump rods, and means for driving one ofsaid units directly from a source of power and all of the other unitsfrom the driven unit, all of said units being interchangeable and eachadapted to be mounteddirectly upon the base.

8. A pump comprising a pump head and two or more pump rods, operatingunits adapted to be mounted in said pump head each separable from andindependent of the other and each provided with unitary and completemeans "for operating a pump rod, each of said units including anexternal gear constructed to mesh with the corresponding gear of anotherunit whereby one or more of said units may be assembled in said pumphead for actuation from a common source of power, and means associatedwith each of said units for connection with a pump rod,

whereby a varying number of pump rods may be used, the same in number asthe op erating units.

4. A pump comprisinga pump head and two or more pump rods, operatingunits adapted to be mounted in said pump head each separable from andindependent of the other and each provided with unitary and. completemeans for operating a pump. rod, each of said units including anexternal gear, a spur gear rotatably mounted on said external gear, afixed internal gear wlth which sald spur gear meshes, and a crank pinsecured to said spur gear, said external gear being constructed to meshwith the corresponding gear of another unit whereby one or more of saidunits may be asembled in said pump head for actuation from a commonsource of power, and means for connecting each of said crank pins with apump rod whereby a varying number of pump rods may be used, the same innumber as the operating units.

5. In combination with a base and two or more pump rods mounted forreciprocation therethrough, operating units for said pump rods eachcomprising an external gear and mechanism connected therewith for independent connection with a pump rod to reciprocate the same, each of saidunits comprising a housing embodying plane-surfaced flanged top andbottom portions for interchangeable connection with the base and withone another, and having openings through said top and bottom portionsthrough which the external gears of adjacent units may extend into mesh.

6. in combination with a base and two or more pump rods mounted forreciprocation therethrough, operating units for said pump rods eachprovided with unitary and complete means for operating one only of saidpump rods, and each being provided with a housing embodyingplane-surfaced flanged top and bottom portions for interchangeableconnection with the base and with one another.

7. In combination with a base adapted to have one or more pump rodsmounted for reciprocation therethrough, a pump operating unit mounted onsaid base and provided with unitary and complete means for operating oneonly of said pump rods, said unit having means for having mountedthereon and being driven therefrom, a second detachable operating unitadapted to have connection with and adapted to operate a second pumprod.

8. In combination with a base adapted to have one or more pump rodsmounted for reciprocation therethrough, a pump operating unit providedwith unitary and complete means for operating one only of said pumprods, said unit having a housing embodying plane-surfaced flanged topand bottom portions for mounting the same upon the base and toreceiveupon the top portion thereof another similar operating unitadapted to have connection with and adapted to operate another pump rod,and means in each of said units adapted to cooperate when the same areso connected together whereby one of said units is driven from. theother. I I

9. In combination with a base and two or other so that the unitedhousings form in ef- 10 feet a single enclosing and supporting memherWith the several pump rods extending therethrough each to its respectiveoperating unit.

In testimony whereof I hereunto afiix my 15 signature.

EDWARD E. JOHNSON.

